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Damage dependent stress limit model for failure prediction in bulk forming processes

Hora, Pavel ; Tong, Longchang ; Berisha, Bekim ; Karadogan, Celalettin

In: International Journal of Material Forming, 2011, vol. 4, no. 3, p. 329-337

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    Titel
    • Damage dependent stress limit model for failure prediction in bulk forming processes
    Autor
    • Hora, Pavel. Institute of Virtual Manufacturing, ETH Zurich, Tannenstr. 3, 8092, Zurich, Switzerland
    • Tong, Longchang. Institute of Virtual Manufacturing, ETH Zurich, Tannenstr. 3, 8092, Zurich, Switzerland
    • Berisha, Bekim. Institute of Virtual Manufacturing, ETH Zurich, Tannenstr. 3, 8092, Zurich, Switzerland
    • Karadogan, Celalettin. Institute of Virtual Manufacturing, ETH Zurich, Tannenstr. 3, 8092, Zurich, Switzerland
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • International Journal of Material Forming, 2011, vol. 4, no. 3, p. 329-337. Springer-Verlag
    Andere elektronische Ausgabe
    OAI-PMH-ID
    • oai:doc.rero.ch:319583
    Summary
    Stress limit, combined with deformation and orientation dependent damages, is proposed as the criterion for failure prediction in bulk forming processes. Dedicatedly designed experiments are carried out to investigate this model. The results verify the existence of the stress limits. The value of stress limit can vary in different directions due to the material processing histories. The experiments revealed also strong kinematical hardening behaviours for the investigated material. The constitutive law has to include this effect to evaluate the stresses with sufficient precision